A math game for grades 6-8. “The Factor Game engages students in a friendly contest in which winning strategies involve distinguishing between numbers with many factors and numbers with few factors. Students are then guided through an analysis of game strategies and introduced to the definitions of prime and composite numbers.” Excellent

FIGURE THIS! MATH CHALLENGES FOR FAMILIEShttp://www.figurethis.org/index40.htmA series of challenges for middle school students and families, all of which involve math. Note: You must download the software to take the challenges. Challenges include math computation, measurement, geometric shapes and more. Includes Teacher and Parent resources in PDF format. Excellent

THE INTERNATIONAL BOILING POINT PROJECT NEW!http://www.k12science.org/curriculum/boilproj/index.html“We have people all over the world boiling water! In the past we've had climbers on Mt. Everest, school children in La Paz, Bolivia and college professors in Cheyenne, Wyoming all participating in the project. The purpose of this project is to discover which factor in the experiment (room temperature, elevation, volume of water, or heating device) has the greatest influence on boiling point. Anyone can participate in this year's project. All you have to do is boil a bit of water, record a bit of information, and send it along to us to include in the database of results. Then, students can analyze all of the data to reach an answer to the question: What causes a pot of water to boil? It's that simple!” Excellent

THE MACTUTOR HISTORY OF MATHEMATICS ARCHIVEhttp://www-groups.dcs.st-and.ac.uk/~history/A collection of indexes of mathematics topics. For grade 7 and up. Sections: Biographies Index, History Topics Index, Famous Curves Index, Mathematicians of the Day, and more. Excellent

THE MATH FORUM – DREXEL UNIVERSITY NEW!http://mathforum.org/A gateway site to a vast amount of information on math for teachers and students at every level. Includes problems, puzzles, forums, and more. Several resources are listed individually on this site. Excellent

MATH IN DAILY LIFEhttp://www.learner.org/exhibits/dailymath/Math is used all the time in daily life. This PBS companion site discusses the use of math in different situations. Sections: Playing to Win, Savings & Credit, Population Growth, Home Decorating, Cooking by Numbers, The Universal Language, and Related Resources. Excellent

MATH-KITECTURE – REAL LIFE MATH, ARCHITECTURE AND COMPUTERS NEW URL!http://www.math-kitecture.com/ “Students can become architects in their mathematics classrooms. Math-Kitecture has a number of activities, including "Floor Plan your Classroom," which offer engaging ways for students to study mathematics by doing real-life architecture. Students learn estimation, measuring skills, proportion, and ratios by hand-drafting a floor plan of their classroom to scale.” Excellent

THE MATHS FILE GAME SHOWhttp://www.bbc.co.uk/education/mathsfile/index.shtmlOnline Flash games for math. Games include: Saloon Snap, Fish Tank, Planet Hop, Late Delivery, Train Race, Builder Ted and more. Includes a Teachers section. Although they are no longer updating this site, the games still work. Excellent

MIDDLE SCHOOL MATH PROBLEM OF THE WEEK NEW!http://web.mac.com/tcanright/MSPOTW/POTW_Home.html“Click on one of the problems listed above. Then try working out a solution to the problem. When you think you have a solution, play the video solution to see how your solution compares to the solution made by the crack team of mathematicians at the “POTW.”” Includes archives of previous problems. Excellent

THE MINT: IDEAS FOR YOUNG KIDS http://www.themint.org/index.htmlExcellent ideas on helping children understand how to manage money and how our financial systems work. Includes: The Four Bank System, How Saving Works, Be a Smart Spender and more. Click on Fun for Kids and then on the tabs at the top. Excellent

Links to several math utilities for senior high students. Sections: Root-Finding Routines, Utilities for Finding Maxima/Minima of Functions, N Equations in N Unknowns, Eigenvalues and Eigenvectors, Numerical Integration, Examples of Applications of Some of These Utilities and Other Utilities. Excellent

SEEING ISN’T ALWAYS BELIEVING NEW!http://library.thinkquest.org/J0110336/home.htm“Enter the world of optical illusions where your eyes may see things that your brain doesn’t understand. Explore how and why you see optical illusions, and discover the many types created over time. Find out how they are a part of art, science, math and our everyday lives. See for yourself how your eyes can fool you by exploring our optical illusion gallery. You may never see things the same again!” Navigate with the links on the bottom of the screen. How We See explains how optical illusions work. The Activities section includes a printable Word Search puzzle, a quiz and more. Excellent

THIS IS MEGA MATHEMATICShttp://www.c3.lanl.gov/mega-math/A huge site for high school and college math students. Sections: The Most Colorful Math of All, Welcome to the Hotel Infinity, Games on Graphics, An Unusual Day at Unusual School, Untangling the Mathematics of Knots, Algorithms and Ice Cream for All, and Machines That Eat Your Words. Click on the ink bottle for math lessons generated by Mega Mathematics. Outstanding. Excellent

TOTALLY TESSELLATED – A THINKQUEST SITE NEW URL!http://library.thinkquest.org/16661/ “This site will give you a comprehensive introduction to tessellations. It will explain the basic mathematics underlying tessellations, as well as allow you to browse through many examples of tessellations in real life. M. C. Escher and his well-known tessellations are also covered in this site.” Excellent

FAMOUS PROBLEMS IN THE HISTORY OF MATHEMATICShttp://mathforum.org/isaac/mathhist.htmlA look at the history of mathematics through math problems which led to discoveries. Sections: The Bridges of Konigsberg, The Value of Pi, Puzzling Primes, Famous Paradoxes, The Problem of Points, A Proof of the Pythagorean Theorem, and A Proof That е is Irrational. Very Good